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Table 5 Predictive capacity according to the number of criteria present

From: Prognostic factors of a favorable outcome following a supervised exercise program for soldiers with sub-acute and chronic low back pain

Number of Prognostic factors Sensitivity Specificity LR+ LR-
One or more 1.00 [0.89–1.00] 0.02 [0.001–0.13] 1.02 [0.98–1.07] N/A
Two or more 0.95 [0.82–0.99] 0.18 [0.09–0.33] 1.16 [0.99–1.35] 0.28 [0.06–1.33]
Three or more 0.90 [0.75–0.96] 0.49 [0.34–0.64] 1.76 [1.30–2.39] 0.20 [0.07–0.54]
Four or more 0.78 [0.61–0.89] 0.80 [0.65–0.90] 3.88 [2.11–7.12] 0.28 [0.16–0.50]
Five 0.33 [0.19–0.49] 0.93 [0.81–0.98] 4.88 [1.50–15.88] 0.72 [0.58–0.90]
  1. Numbers in square brackets represent the 95% confidence interval